Loans and ACL - Summary of Change in the ACL by Major Loan Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023		Mar. 31, 2022
Financing Receivable Impaired [Line Items]
Balance, beginning of period	$ 22,939	[1]	$ 12,121
Charge-offs	(1,309)		(2,819)
Recoveries			211
Net charge-offs	(1,087)		(2,608)
Provision for loan losses	4,100		2,500
Balance, end of period	29,974		12,013
Commercial and Industrial [Member]
Financing Receivable Impaired [Line Items]
Balance, beginning of period	19,269
Charge-offs	(799)		(2,401)
Recoveries			74
Net charge-offs	(681)
Provision for loan losses	3,161
Balance, end of period	21,279
Real estate construction [Member]
Financing Receivable Impaired [Line Items]
Charge-offs			(123)
Recoveries			12
Real Estate Mortgage [Member]
Financing Receivable Impaired [Line Items]
Charge-offs			(16)
Recoveries			4
Consumer [Member]
Financing Receivable Impaired [Line Items]
Balance, beginning of period	3,670
Charge-offs	(497)		(279)
Recoveries			$ 121
Net charge-offs	(406)
Provision for loan losses	939
Balance, end of period	8,695
Impact of ASC 326 Adoption [Member]
Financing Receivable Impaired [Line Items]
Balance, beginning of period	4,022
Impact of ASC 326 adoption	4,022
Charge-offs	(1,309)
Recoveries	222
Impact of ASC 326 Adoption [Member] | Commercial and Industrial [Member]
Financing Receivable Impaired [Line Items]
Impact of ASC 326 adoption	(470)
Charge-offs	(799)
Recoveries	118
Impact of ASC 326 Adoption [Member] | Consumer [Member]
Financing Receivable Impaired [Line Items]
Impact of ASC 326 adoption	4,492
Charge-offs	(510)
Recoveries	$ 104

[1] Derived from audited December 31, 2022 Consolidated Financial Statements.